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sim: debug memory requests will access IO memory.

This commit is contained in:
Daniel Beer 2011-03-10 16:48:16 +13:00
parent 82638f89af
commit 8a1c8e8209
1 changed files with 36 additions and 0 deletions
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36
sim.c
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@ -550,6 +550,26 @@ static int sim_readmem(device_t dev_base, address_t addr,
if (addr + len > MEM_SIZE) if (addr + len > MEM_SIZE)
len = MEM_SIZE - addr; len = MEM_SIZE - addr;
/* Read byte IO addresses */
while (len && (addr < 0x100)) {
simio_read_b(addr, mem);
mem++;
len--;
addr++;
}
/* Read word IO addresses */
while (len > 2 && (addr < 0x200)) {
uint16_t data = 0;
simio_read(addr, &data);
mem[0] = data & 0xff;
mem[1] = data >> 8;
mem += 2;
len -= 2;
addr += 2;
}
memcpy(mem, dev->memory + addr, len); memcpy(mem, dev->memory + addr, len);
return 0; return 0;
} }
@ -565,6 +585,22 @@ static int sim_writemem(device_t dev_base, address_t addr,
return -1; return -1;
} }
/* Write byte IO addresses */
while (len && (addr < 0x100)) {
simio_write_b(addr, *mem);
mem++;
len--;
addr++;
}
/* Write word IO addresses */
while (len > 2 && (addr < 0x200)) {
simio_write(addr, ((uint16_t)mem[1] << 8) | mem[0]);
mem += 2;
len -= 2;
addr += 2;
}
memcpy(dev->memory + addr, mem, len); memcpy(dev->memory + addr, mem, len);
return 0; return 0;
} }